> It looks like deb files only can be installed via the terminal.
Oh, I did not even notice that during 4+ weeks on the unreleased Xubuntu Focal because I never use anything else but the command line to install software. But the target audience Ubuntu is wider, so I think that is a very bad change. One might think they have learned from https://bugs.launchpad.net/ubuntu/+bug/1 , but obviously not. Well, formally they declared bug #1 solved, but few would agree that the Linux desktop has won.
How does the snap "repo" compare to the Ubuntu repos in terms of count? I would have guessed it's orders of magnitude. Even if many of the packages might not be useful for those requiring an installation GUI.